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A 3‐D metal printed folded‐shorted patch array with an integrated feeding circuit offering dual‐band circularly polarised radiation for cubesat applications

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  • Yuepei Li
  • Jiayu Rao
  • Lei Wang
  • Yuan Ding
  • Symon K. Podilchak
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Article numbere13024
<mark>Journal publication date</mark>31/01/2024
<mark>Journal</mark>Electronics Letters
Issue number2
Volume60
Publication StatusPublished
Early online date13/01/24
<mark>Original language</mark>English

Abstract

This letter presents a three-dimensional (3-D) printed metallic antenna array that combines folded-shorted patches (FSPs) and meandering for structure compactness. The design provides dual-band functionality, operating in the L-band and the S-band. The compact and broadband feeding network, which is also integrated onto the backside of the antenna ground plane, enables circularly polarised radiation over an operational bandwidth of more than 80%. The dimensions of the array are 0.4 × 0.4 × 0.056 (Formula presented.) (where λ 0 is the free space wavelength at 1.2 GHz), making the design suitable for CubeSats and other space constraint applications. The measured right-handed circular polarised realised gains are 2.32 dBic and 1.84 dBic at 1.2 GHz and 2.45 GHz, respectively. In addition, the 3-D metallic printed FSP elements can be flexibly arranged for different link requirements and other applications like beam steering.